.container {
  border: 1px solid #282c34;
  margin: 0 auto;
  width: 400px;
  height: 400px;
  position: relative;
}
.back {
  position: absolute;
  top: 5px;
  right: 10px;
  cursor: pointer;
  font-size: 16px;
  background: rgba(0,0,0,0.6);
  border-radius: 4px;
  padding: 5px 10px;
  color: white;
}
